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Greg Polanski

Location of Photo:

This photo was taken at The Dark Sky Preserve in North Frontenac, Plevna, ON, Canada

Date/Time of photo:

Taken on April 11, 2019


Equipment used: Imaging telescope or lens:Sky Watcher 150/750 Sky Watcher Black Diamond Imaging camera:QHY163M Guiding telescope or lens:Orion 60mm Multi-Use Guide Scope with Helical Focuser Guiding camera:Orion Starshoot Autoguider Focal reducer:Sky-Watcher Coma corrector f/5 Filters:Baader 2" Lum, Baader 2" Blue, Baader 2" Green, Baader 2" Red Accessories:PrimaLuceLab Sesto Senso Robotic Focusing Motor, QHYCCD QHYCFW3-M


The Whirlpool Galaxy is a spiral galaxy that is relatively close to Earth – about 30 million light-years away. It contains about 100 billion stars. M51 has radius of 30,000 light years. Final image of this galaxy was created by combining 80 3-minute exposures in the process called stacking.


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